osprey/kg++fe/gnu/except.c File Reference

#include "config.h"
#include "system.h"
#include "rtl.h"
#include "tree.h"
#include "flags.h"
#include "function.h"
#include "expr.h"
#include "libfuncs.h"
#include "insn-config.h"
#include "except.h"
#include "integrate.h"
#include "hard-reg-set.h"
#include "basic-block.h"
#include "output.h"
#include "dwarf2asm.h"
#include "dwarf2out.h"
#include "dwarf2.h"
#include "toplev.h"
#include "hashtab.h"
#include "intl.h"
#include "ggc.h"
#include "tm_p.h"
#include "target.h"
#include "langhooks.h"
#include "gt-except.h"

Include dependency graph for except.c:

Go to the source code of this file.

Data Types

type sjlj_lp_info

type action_record

Defines

#define EH_RETURN_DATA_REGNO(N)   INVALID_REGNUM

Enumerations

enum reachable_code {
  RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED,
  RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED,
  RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED,
  RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED
}

Functions/Subroutines

tree lang_protect_cleanup_actions PARAMS ((void))

int lang_eh_type_covers PARAMS ((tree a, tree b))

tree lang_eh_runtime_type PARAMS ((tree))

struct ehl_map_entry GTY (())

static GTY ((param_is(union tree_node)))

static int t2r_eq PARAMS ((const PTR, const PTR))

static hashval_t t2r_hash PARAMS ((const PTR))

static rtx get_exception_filter PARAMS ((struct function *))

static void
remove_unreachable_regions PARAMS ((rtx))

static void
convert_from_eh_region_ranges_1 PARAMS ((rtx *, int *, int))

static struct eh_region
*duplicate_eh_region_1 PARAMS ((struct eh_region *, struct inline_remap *))

static void duplicate_eh_region_2 PARAMS ((struct eh_region *, struct eh_region **))

static int add_ttypes_entry PARAMS ((htab_t, tree))

static int add_ehspec_entry PARAMS ((htab_t, htab_t, tree))

static bool
sjlj_find_directly_reachable_regions PARAMS ((struct sjlj_lp_info *))

static void
sjlj_assign_call_site_values PARAMS ((rtx, struct sjlj_lp_info *))

static void add_ehl_entry PARAMS ((rtx, struct eh_region *))

static void remove_eh_handler PARAMS ((struct eh_region *))

static int for_each_eh_label_1 PARAMS ((PTR *, PTR))

static int check_handled PARAMS ((tree, tree))

static void add_reachable_handler PARAMS ((struct reachable_info *, struct eh_region *, struct eh_region *))

static enum reachable_code
reachable_next_level PARAMS ((struct eh_region *, tree, struct reachable_info *))

static int add_action_record PARAMS ((htab_t, int, int))

static int collect_one_action_chain PARAMS ((htab_t, struct eh_region *))

static int add_call_site PARAMS ((rtx, int))

static void push_uleb128 PARAMS ((varray_type *, unsigned int))

static void push_sleb128 PARAMS ((varray_type *, int))

int doing_eh (int do_warn)

void init_eh ()

void init_eh_for_function ()

void expand_eh_region_start ()

static struct eh_region * expand_eh_region_end ()

void expand_eh_region_end_cleanup (tree handler)

void expand_start_all_catch ()

void expand_start_catch (tree type_or_list)

void expand_end_catch ()

void expand_end_all_catch ()

void expand_eh_region_end_allowed (tree allowed, tree failure)

rtx expand_builtin_extend_pointer (tree addr_tree)

void expand_eh_region_end_must_not_throw (tree failure)

void expand_eh_region_end_throw (tree type)

void expand_eh_region_end_fixup (tree handler)

void note_eh_region_may_contain_throw ()

rtx get_exception_pointer (struct function *fun)

static rtx get_exception_filter (struct function *fun)

static void collect_eh_region_array ()

static void resolve_fixup_regions ()

static void remove_fixup_regions ()

static void remove_unreachable_regions (rtx insns)

static void convert_from_eh_region_ranges_1 (rtx *pinsns, int *orig_sp, int cur)

void convert_from_eh_region_ranges ()

static void add_ehl_entry (rtx label, struct eh_region *region)

void find_exception_handler_labels ()

bool current_function_has_exception_handlers ()

static struct eh_region * duplicate_eh_region_1 (struct eh_region *o, struct inline_remap *map)

static void duplicate_eh_region_2 (struct eh_region *o, struct eh_region **n_array)

int duplicate_eh_regions (struct function *ifun, struct inline_remap *map)

static int t2r_eq (PTR pentry, const PTR pdata) const

static hashval_t t2r_hash (PTR pentry) const

static void add_type_for_runtime (tree type)

static tree lookup_type_for_runtime (tree type)

static int ttypes_filter_eq (PTR pentry, const PTR pdata) const

static hashval_t ttypes_filter_hash (PTR pentry) const

static int ehspec_filter_eq (PTR pentry, const PTR pdata) const

static hashval_t ehspec_filter_hash (PTR pentry) const

static int add_ttypes_entry (htab_t ttypes_hash, tree type)

static int add_ehspec_entry (htab_t ehspec_hash, htab_t ttypes_hash, tree list)

static void assign_filter_values ()

static void build_post_landing_pads ()

static void connect_post_landing_pads ()

static void dw2_build_landing_pads ()

static bool sjlj_find_directly_reachable_regions (struct sjlj_lp_info *lp_info)

static void sjlj_assign_call_site_values (rtx dispatch_label, struct sjlj_lp_info *lp_info)

static void sjlj_mark_call_sites (struct sjlj_lp_info *lp_info)

static void sjlj_emit_function_enter (rtx dispatch_label)

void sjlj_emit_function_exit_after (rtx after)

static void sjlj_emit_function_exit ()

static void sjlj_emit_dispatch_table (rtx dispatch_label, struct sjlj_lp_info *lp_info)

static void sjlj_build_landing_pads ()

void finish_eh_generation ()

static hashval_t ehl_hash (PTR pentry) const

static int ehl_eq (PTR pentry, const PTR pdata) const

static void remove_exception_handler_label (rtx label)

static void remove_eh_handler (struct eh_region *region)

void maybe_remove_eh_handler (rtx label)

void for_each_eh_label (callback)

static int for_each_eh_label_1 (PTR *pentry, PTR data)

static int check_handled (tree handled, tree type)

static void add_reachable_handler (struct reachable_info *info, struct eh_region *lp_region, struct eh_region *region)

static enum reachable_code reachable_next_level (struct eh_region *region, tree type_thrown, struct reachable_info *info)

rtx reachable_handlers (rtx insn)

bool can_throw_internal (rtx insn)

bool can_throw_external (rtx insn)

void set_nothrow_function_flags ()

void expand_builtin_unwind_init ()

rtx expand_builtin_eh_return_data_regno (tree arglist)

rtx expand_builtin_extract_return_addr (tree addr_tree)

rtx expand_builtin_frob_return_addr (tree addr_tree)

void expand_builtin_eh_return (stackadj_tree, tree handler_tree)

void expand_eh_return ()

static int action_record_eq (PTR pentry, const PTR pdata) const

static hashval_t action_record_hash (PTR pentry) const

static int add_action_record (htab_t ar_hash, int filter, int next)

static int collect_one_action_chain (htab_t ar_hash, struct eh_region *region)

static int add_call_site (rtx landing_pad, int action)

void convert_to_eh_region_ranges ()

static void push_uleb128 (varray_type *data_area, unsigned int value)

static void push_sleb128 (varray_type *data_area, int value)

static int dw2_size_of_call_site_table ()

static int sjlj_size_of_call_site_table ()

static void dw2_output_call_site_table ()

static void sjlj_output_call_site_table ()

void default_exception_section ()

void output_function_exception_table ()

Variables

int flag_non_call_exceptions

static int call_site_base

Define Documentation

#define EH_RETURN_DATA_REGNO ( N ) INVALID_REGNUM

Definition at line 82 of file except.c.

Enumeration Type Documentation

enum reachable_code

Enumerator:

RNL_NOT_CAUGHT
RNL_MAYBE_CAUGHT
RNL_CAUGHT
RNL_BLOCKED
RNL_NOT_CAUGHT
RNL_MAYBE_CAUGHT
RNL_CAUGHT
RNL_BLOCKED
RNL_NOT_CAUGHT
RNL_MAYBE_CAUGHT
RNL_CAUGHT
RNL_BLOCKED
RNL_NOT_CAUGHT
RNL_MAYBE_CAUGHT
RNL_CAUGHT
RNL_BLOCKED

Definition at line 319 of file except.c.

Function Documentation

static int action_record_eq	(	PTR	pentry,
		const PTR	pdata
	)			const `[static]`

Definition at line 3187 of file except.c.

References action_record::filter, and action_record::next.

Referenced by convert_to_eh_region_ranges(), and sjlj_assign_call_site_values().

static hashval_t action_record_hash ( PTR pentry ) const [static]

Definition at line 3197 of file except.c.

References action_record::filter, and action_record::next.

Referenced by convert_to_eh_region_ranges(), and sjlj_assign_call_site_values().

static int add_action_record	(	htab_t	ar_hash,
		int	filter,
		int	next
	)			`[static]`

Definition at line 3205 of file except.c.

References cfun, action_record::filter, htab_find_slot(), INSERT, action_record::next, NULL, push_sleb128(), tmp, VARRAY_ACTIVE_SIZE, and xmalloc().

Referenced by collect_one_action_chain().

static int add_call_site	(	rtx	landing_pad,
		int	action
	)			`[static]`

Definition at line 3341 of file except.c.

References call_site_base, cfun, ggc_realloc, and size.

Referenced by convert_to_eh_region_ranges(), and sjlj_assign_call_site_values().

static void add_ehl_entry	(	rtx	label,
		struct eh_region *	region
	)			`[static]`

Definition at line 1205 of file except.c.

References abort, cfun, ggc_alloc, htab_find_slot(), INSERT, and LABEL_PRESERVE_P.

Referenced by find_exception_handler_labels().

static int add_ehspec_entry	(	htab_t	ehspec_hash,
		htab_t	ttypes_hash,
		tree	list
	)			`[static]`

Definition at line 1582 of file except.c.

References add_ttypes_entry(), cfun, htab_find_slot(), INSERT, n, NULL, push_uleb128(), TREE_CHAIN, TREE_VALUE, VARRAY_ACTIVE_SIZE, VARRAY_PUSH_UCHAR, and xmalloc().

Referenced by assign_filter_values().

static void add_reachable_handler	(	struct reachable_info *	info,
		struct eh_region *	lp_region,
		struct eh_region *	region
	)			`[static]`

Definition at line 2576 of file except.c.

References alloc_INSN_LIST(), cfun, and NULL_RTX.

Referenced by reachable_next_level().

static int add_ttypes_entry	(	htab_t	ttypes_hash,
		tree	type
	)			`[static]`

Definition at line 1554 of file except.c.

References cfun, htab_find_slot_with_hash(), INSERT, n, NULL, TYPE_HASH, VARRAY_ACTIVE_SIZE, VARRAY_PUSH_TREE, and xmalloc().

Referenced by add_ehspec_entry(), and assign_filter_values().

static void add_type_for_runtime ( tree type ) [static]

Definition at line 1461 of file except.c.

References htab_find_slot_with_hash(), INSERT, NULL, NULL_TREE, runtime, tree_cons, and TYPE_HASH.

Referenced by expand_eh_region_end_allowed(), expand_start_catch(), gen_eh_region_allowed(), and gen_eh_region_catch().

static void assign_filter_values ( void ) [static]

Definition at line 1620 of file except.c.

References add_ehspec_entry(), add_ttypes_entry(), build_int_2, cfun, ehspec_filter_eq(), ehspec_filter_hash(), free(), htab_create(), htab_delete(), i, NULL, NULL_TREE, r, TREE_CHAIN, tree_cons, TREE_VALUE, ttypes_filter_eq(), ttypes_filter_hash(), VARRAY_TREE_INIT, and VARRAY_UCHAR_INIT.

Referenced by finish_eh_generation().

static void build_post_landing_pads ( void ) [static]

Definition at line 1689 of file except.c.

References abort, c, cfun, emit_barrier(), emit_cmp_and_jump_insns(), emit_insn_before(), emit_jump(), emit_jump_insn(), emit_label(), end_sequence(), EQ, GEN_INT, gen_label_rtx(), gen_rtx_RESX, get_insns(), i, NULL, NULL_RTX, region, start_sequence(), TREE_CHAIN, tree_low_cst(), TREE_VALUE, and word_mode.

Referenced by finish_eh_generation().

bool can_throw_external ( rtx insn )

Definition at line 2884 of file except.c.

Referenced by can_throw_external(), and set_nothrow_function_flags().

bool can_throw_internal ( rtx insn )

Definition at line 2823 of file except.c.

Referenced by can_throw_internal(), compute_defs_uses_and_gen(), control_flow_insn_p(), df_ri_bb_compute(), find_dead_or_set_registers(), find_invariant_insn(), fixup_abnormal_edges(), insert_stores(), merge_if_block(), move_btr_def(), perhaps_ends_bb_p(), prescan_loop(), propagate_one_insn(), purge_dead_edges(), reload(), sched_analyze_insn(), and update_equiv_regs().

static int check_handled	(	tree	handled,
		tree	type
	)			`[static]`

Definition at line 2545 of file except.c.

References lang_eh_type_covers, TREE_CHAIN, and TREE_VALUE.

Referenced by reachable_next_level().

static void collect_eh_region_array ( void ) [static]

Definition at line 903 of file except.c.

References cfun, ggc_alloc_cleared, i, and NULL.

Referenced by convert_from_eh_region_ranges(), and lower_eh_constructs().

static int collect_one_action_chain	(	htab_t	ar_hash,
		struct eh_region *	region
	)			`[static]`

Definition at line 3238 of file except.c.

References abort, add_action_record(), c, filter(), NULL, TREE_CHAIN, TREE_INT_CST_LOW, and TREE_VALUE.

Referenced by collect_one_action_chain(), convert_to_eh_region_ranges(), and sjlj_assign_call_site_values().

static void connect_post_landing_pads ( void ) [static]

Definition at line 1805 of file except.c.

References cfun, delete_insn(), emit_insn_before(), emit_jump(), emit_library_call(), end_sequence(), get_insns(), i, INSN_DELETED_P, LCT_THROW, ptr_mode, region, start_sequence(), and unwind_resume_libfunc.

Referenced by finish_eh_generation().

void convert_from_eh_region_ranges ( void )

Definition at line 1187 of file except.c.

Referenced by rest_of_compilation(), and tree_expand_cfg().

static void convert_from_eh_region_ranges_1	(	rtx *	pinsns,
		int *	orig_sp,
		int	cur
	)			`[static]`

Definition at line 1103 of file except.c.

References abort, alloc_EXPR_LIST(), cfun, find_reg_note(), flag_non_call_exceptions, GEN_INT, GET_CODE, insn, INSN_P, may_trap_p(), next, NEXT_INSN, NOTE_EH_HANDLER, NOTE_INSN_EH_REGION_BEG, NOTE_INSN_EH_REGION_END, NOTE_LINE_NUMBER, NULL_RTX, PATTERN, r, REG_EH_REGION, REG_NOTES, remove_insn(), sp, USE, and XEXP.

Referenced by convert_from_eh_region_ranges(), and convert_from_eh_region_ranges_1().

void convert_to_eh_region_ranges ( void )

Definition at line 3371 of file except.c.

Referenced by rest_of_compilation().

bool current_function_has_exception_handlers ( void )

Definition at line 1272 of file except.c.

Referenced by optimize_sibling_and_tail_recursive_calls(), and suitable_for_tail_call_opt_p().

void default_exception_section ( void )

Definition at line 3641 of file except.c.

int doing_eh ( int do_warn )

static struct eh_region* duplicate_eh_region_1	(	struct eh_region *	o,
		struct inline_remap *	map
	)			`[static, read]`

Definition at line 1290 of file except.c.

References abort, cfun, CODE_LABEL_NUMBER, get_label_from_map(), ggc_alloc_cleared, inline_remap::insn_map, INSN_UID, n, and NULL.

Referenced by duplicate_eh_regions().

static void duplicate_eh_region_2	(	struct eh_region *	o,
		struct eh_region **	n_array
	)			`[static]`

Definition at line 1341 of file except.c.

References n.

Referenced by duplicate_eh_regions().

int duplicate_eh_regions	(	struct function *	ifun,
		struct inline_remap *	map
	)

Definition at line 1374 of file except.c.

References cfun, cur, duplicate_eh_region_1(), duplicate_eh_region_2(), free(), i, NULL, p, root, and xcalloc().

Referenced by copy_cfg_body(), expand_inline_function(), and move_sese_region_to_fn().

static void dw2_build_landing_pads ( void ) [static]

Definition at line 1846 of file except.c.

References call_used_regs, cfun, EH_RETURN_DATA_REGNO, emit_insn(), emit_insn_before(), emit_label(), emit_move_insn(), end_sequence(), gen_exception_receiver(), gen_label_rtx(), gen_rtx_ASM_INPUT, gen_rtx_CLOBBER, gen_rtx_REG(), get_insns(), HAVE_exception_receiver, i, INVALID_REGNUM, Pmode, ptr_mode, r, region, start_sequence(), and word_mode.

Referenced by finish_eh_generation().

static void dw2_output_call_site_table ( void ) [static]

Definition at line 3568 of file except.c.

References ASM_GENERATE_INTERNAL_LABEL, call_site_base, cfun, CODE_LABEL_NUMBER, cs, current_function_func_begin_label, dw2_asm_output_data(), dw2_asm_output_data_uleb128(), dw2_asm_output_delta(), dw2_asm_output_delta_uleb128(), i, IDENTIFIER_POINTER, and n.

Referenced by output_function_exception_table().

static int dw2_size_of_call_site_table ( void ) [static]

Definition at line 3534 of file except.c.

References cfun, cs, i, n, size, and size_of_uleb128().

Referenced by output_function_exception_table().

static int ehl_eq	(	PTR	pentry,
		const PTR	pdata
	)			const `[static]`

Definition at line 2346 of file except.c.

Referenced by find_exception_handler_labels().

static hashval_t ehl_hash ( PTR pentry ) const [static]

Definition at line 2335 of file except.c.

References CODE_LABEL_NUMBER.

Referenced by find_exception_handler_labels().

static int ehspec_filter_eq	(	PTR	pentry,
		const PTR	pdata
	)			const `[static]`

Definition at line 1525 of file except.c.

References type_list_equal().

Referenced by assign_filter_values().

static hashval_t ehspec_filter_hash ( PTR pentry ) const [static]

Definition at line 1538 of file except.c.

References h, TREE_CHAIN, TREE_VALUE, and TYPE_HASH.

Referenced by assign_filter_values().

void expand_builtin_eh_return	(	stackadj_tree	,
		tree	handler_tree
	)

Definition at line 3095 of file except.c.

References cfun, convert_memory_address(), copy_to_reg(), emit_jump(), emit_move_insn(), expand_expr(), gen_label_rtx(), GET_MODE, Pmode, and tmp.

Referenced by expand_builtin().

rtx expand_builtin_eh_return_data_regno ( tree arglist )

Definition at line 3010 of file except.c.

Referenced by expand_builtin().

rtx expand_builtin_extend_pointer ( tree addr_tree )

Definition at line 755 of file except.c.

Referenced by expand_builtin().

rtx expand_builtin_extract_return_addr ( tree addr_tree )

Definition at line 3040 of file except.c.

Referenced by expand_builtin().

rtx expand_builtin_frob_return_addr ( tree addr_tree )

Definition at line 3073 of file except.c.

Referenced by expand_builtin().

void expand_builtin_unwind_init ( void )

Definition at line 2998 of file except.c.

Referenced by expand_builtin().

static struct eh_region* expand_eh_region_end ( ) [static, read]

Definition at line 522 of file except.c.

References cfun, emit_note(), NOTE_EH_HANDLER, NOTE_INSN_EH_REGION_END, and NULL.

Referenced by expand_eh_region_end_allowed(), expand_eh_region_end_cleanup(), expand_eh_region_end_fixup(), expand_eh_region_end_must_not_throw(), expand_eh_region_end_throw(), expand_end_catch(), and expand_start_all_catch().

void expand_eh_region_end_allowed	(	tree	allowed,
		tree	failure
	)

Definition at line 717 of file except.c.

References add_type_for_runtime(), const0_rtx, do_pending_stack_adjust(), doing_eh(), emit_jump(), emit_label(), expand_eh_region_end(), expand_expr(), EXPAND_NORMAL, gen_label_rtx(), region, TREE_CHAIN, and TREE_VALUE.

Referenced by genrtl_eh_spec_block().

void expand_eh_region_end_cleanup ( tree handler )

Definition at line 541 of file except.c.

References cfun, const0_rtx, do_pending_stack_adjust(), doing_eh(), emit_barrier(), emit_jump(), emit_jump_insn(), emit_label(), emit_move_insn(), expand_eh_region_end(), expand_eh_region_end_must_not_throw(), expand_eh_region_start(), expand_expr(), flag_non_call_exceptions, gen_label_rtx(), gen_reg_rtx(), gen_rtx_RESX, get_exception_filter(), get_exception_pointer(), lang_protect_cleanup_actions, NULL_TREE, ptr_mode, region, and word_mode.

Referenced by expand_cleanups(), expand_expr(), and genrtl_try_block().

void expand_eh_region_end_fixup ( tree handler )

Definition at line 835 of file except.c.

References doing_eh(), and expand_eh_region_end().

Referenced by expand_cleanups().

void expand_eh_region_end_must_not_throw ( tree failure )

Definition at line 780 of file except.c.

References const0_rtx, doing_eh(), emit_jump(), emit_label(), expand_eh_region_end(), expand_expr(), EXPAND_NORMAL, gen_label_rtx(), and region.

Referenced by cxx_expand_expr(), and expand_eh_region_end_cleanup().

void expand_eh_region_end_throw ( tree type )

Definition at line 811 of file except.c.

References doing_eh(), expand_eh_region_end(), and region.

void expand_eh_region_start ( )

Definition at line 488 of file except.c.

References cfun, doing_eh(), emit_note(), ggc_alloc_cleared, NOTE_EH_HANDLER, NOTE_INSN_EH_REGION_BEG, and NULL.

Referenced by cxx_expand_expr(), expand_cleanups(), expand_decl_cleanup(), expand_eh_region_end_cleanup(), expand_expr(), expand_start_catch(), expand_start_java_handler(), genrtl_eh_spec_block(), genrtl_try_block(), and java_lang_expand_expr().

void expand_eh_return ( void )

Definition at line 3129 of file except.c.

void expand_end_all_catch ( )

Definition at line 695 of file except.c.

References cfun, doing_eh(), and emit_label().

Referenced by expand_end_java_handler(), genrtl_try_block(), and java_lang_expand_expr().

void expand_end_catch ( )

Definition at line 679 of file except.c.

References cfun, doing_eh(), emit_jump(), and expand_eh_region_end().

Referenced by expand_end_java_handler(), genrtl_handler(), and java_lang_expand_expr().

void expand_start_all_catch ( )

Definition at line 608 of file except.c.

References cfun, doing_eh(), emit_jump(), expand_eh_region_end(), gen_label_rtx(), and region.

Referenced by expand_end_java_handler(), genrtl_try_block(), and java_lang_expand_expr().

void expand_start_catch ( tree type_or_list )

Definition at line 631 of file except.c.

References add_type_for_runtime(), c, cfun, doing_eh(), emit_label(), expand_eh_region_start(), gen_label_rtx(), NULL_TREE, TREE_CHAIN, TREE_CODE, tree_cons, and TREE_VALUE.

Referenced by expand_end_java_handler(), genrtl_handler(), and java_lang_expand_expr().

void find_exception_handler_labels ( void )

Definition at line 1231 of file except.c.

Referenced by finish_eh_generation(), rest_of_compilation(), and tree_expand_cfg().

void finish_eh_generation ( void )

Definition at line 2293 of file except.c.

Referenced by rest_of_compilation(), and rest_of_handle_eh().

void for_each_eh_label ( callback )

Definition at line 2512 of file except.c.

References callback(), cfun, for_each_eh_label_1(), and htab_traverse().

Referenced by find_and_verify_loops(), and set_initial_label_offsets().

static int for_each_eh_label_1	(	PTR *	pentry,
		PTR	data
	)			`[static]`

Definition at line 2520 of file except.c.

References callback(), PARAMS, and void.

Referenced by for_each_eh_label().

static rtx get_exception_filter ( struct function * fun ) [static]

Definition at line 884 of file except.c.

References cfun, filter(), gen_reg_rtx(), and word_mode.

Referenced by expand_eh_region_end_cleanup(), expand_expr_real_1(), and finish_eh_generation().

rtx get_exception_pointer ( struct function * fun )

Definition at line 868 of file except.c.

Referenced by expand_eh_region_end_cleanup(), expand_expr(), expand_expr_real_1(), expand_inline_function(), and finish_eh_generation().

static GTY ( (param_is(union tree_node)) ) [static]

Definition at line 108 of file except.c.

References cleanup(), exp, filter(), GTY, and tag.

struct ehl_map_entry GTY ( () ) [read, write]

Definition at line 101 of file except.c.

References region.

void init_eh ( void )

Definition at line 383 of file except.c.

Referenced by lang_dependent_init().

void init_eh_for_function ( void )

Definition at line 477 of file except.c.

Referenced by allocate_struct_function(), copy_cfg_body(), move_sese_region_to_fn(), and prepare_function_start().

static tree lookup_type_for_runtime ( tree type ) [static]

Definition at line 1476 of file except.c.

References htab_find_slot_with_hash(), NO_INSERT, TREE_VALUE, and TYPE_HASH.

Referenced by output_function_exception_table(), and output_ttype().

void maybe_remove_eh_handler ( rtx label )

Definition at line 2473 of file except.c.

Referenced by cfg_layout_merge_blocks(), flow_delete_block_noexpunge(), rtl_delete_block(), and rtl_merge_blocks().

void note_eh_region_may_contain_throw ( )

Definition at line 852 of file except.c.

References cfun, and region.

Referenced by emit_call_1(), lower_eh_constructs_1(), and note_current_region_may_contain_throw().

void output_function_exception_table ( void )

Definition at line 3665 of file except.c.

Referenced by rest_of_compilation(), and rest_of_handle_final().

static void push_sleb128 PARAMS ( (varray_type *, int) ) [static]

static void push_uleb128 PARAMS ( (varray_type *, unsigned int) ) [static]

static int add_call_site PARAMS ( (rtx, int) ) [static]

static int collect_one_action_chain PARAMS ( (htab_t, struct eh_region *) ) [static]

static int add_action_record PARAMS ( (htab_t, int, int) ) [static]

static enum reachable_code reachable_next_level PARAMS ( (struct eh_region *, tree, struct reachable_info *) ) [static]

static void add_reachable_handler PARAMS ( (struct reachable_info *, struct eh_region *, struct eh_region *) ) [static]

static int check_handled PARAMS ( (tree, tree) ) [static]

static int for_each_eh_label_1 PARAMS ( (PTR *, PTR) ) [static]

static void remove_eh_handler PARAMS ( (struct eh_region *) ) [static]

static void add_ehl_entry PARAMS ( (rtx, struct eh_region *) ) [static]

static void sjlj_assign_call_site_values PARAMS ( (rtx, struct sjlj_lp_info *) ) [static]

static bool sjlj_find_directly_reachable_regions PARAMS ( (struct sjlj_lp_info *) ) [static]

static int add_ehspec_entry PARAMS ( (htab_t, htab_t, tree) ) [static]

static int add_ttypes_entry PARAMS ( (htab_t, tree) ) [static]

static void duplicate_eh_region_2 PARAMS ( (struct eh_region *, struct eh_region **) ) [static]

static struct eh_region* duplicate_eh_region_1 PARAMS ( (struct eh_region *, struct inline_remap *) ) [static, read]

static void convert_from_eh_region_ranges_1 PARAMS ( (rtx *, int *, int) ) [static]

static void remove_unreachable_regions PARAMS ( (rtx) ) [static]

static rtx get_exception_filter PARAMS ( (struct function *) ) [static]

static hashval_t t2r_hash PARAMS ( (const PTR) ) [static]

static int t2r_eq PARAMS ( (const PTR, const PTR) ) [static]

tree lang_eh_runtime_type PARAMS ( (tree) )

int lang_eh_type_covers PARAMS ( (tree a, tree b) )

tree lang_protect_cleanup_actions PARAMS ( (void) ) [read]

Definition at line 77 of file cplus-dem.c.

static void push_sleb128	(	varray_type *	data_area,
		int	value
	)			`[static]`

Definition at line 3511 of file except.c.

References VARRAY_PUSH_UCHAR.

Referenced by add_action_record().

static void push_uleb128	(	varray_type *	data_area,
		unsigned int	value
	)			`[static]`

Definition at line 3495 of file except.c.

References VARRAY_PUSH_UCHAR.

Referenced by add_ehspec_entry().

rtx reachable_handlers ( rtx insn )

Definition at line 2763 of file except.c.

Referenced by make_eh_edge(), and rtl_make_eh_edge().

static enum reachable_code reachable_next_level	(	struct eh_region *	region,
		tree	type_thrown,
		struct reachable_info *	info
	)			`[static]`

Definition at line 2599 of file except.c.

References abort, add_reachable_handler(), c, check_handled(), lang_eh_type_covers, NULL, NULL_TREE, ret, RNL_BLOCKED, RNL_CAUGHT, RNL_MAYBE_CAUGHT, RNL_NOT_CAUGHT, TREE_CHAIN, tree_cons, TREE_VALUE, reachable_info::types_allowed, and reachable_info::types_caught.

Referenced by can_throw_external(), can_throw_external_1(), can_throw_internal(), can_throw_internal_1(), foreach_reachable_handler(), reachable_handlers(), and sjlj_find_directly_reachable_regions().

static void remove_eh_handler ( struct eh_region * region ) [static]

Definition at line 2383 of file except.c.

References cfun, EXECUTE_IF_SET_IN_BITMAP, i, lab, and p.

Referenced by connect_post_landing_pads(), maybe_remove_eh_handler(), remove_eh_handler(), remove_fixup_regions(), and remove_unreachable_regions().

static void remove_exception_handler_label ( rtx label ) [static]

Definition at line 2361 of file except.c.

References abort, cfun, htab_clear_slot(), htab_find_slot(), NO_INSERT, NULL, and tmp.

Referenced by remove_eh_handler().

static void remove_fixup_regions ( ) [static]

Definition at line 969 of file except.c.

References cfun, find_reg_note(), GEN_INT, get_insns(), i, insn, INSN_P, INTVAL, NEXT_INSN, NULL, NULL_TREE, p, REG_EH_REGION, remove_eh_handler(), remove_note(), bfd_link_order::u, and XEXP.

Referenced by convert_from_eh_region_ranges().

static void remove_unreachable_regions ( rtx insns ) [static]

Definition at line 1039 of file except.c.

References abort, cfun, free(), get_max_uid(), i, insn, INSN_UID, NEXT_INSN, r, remove_eh_handler(), and xcalloc().

Referenced by convert_from_eh_region_ranges().

static void resolve_fixup_regions ( ) [static]

Definition at line 939 of file except.c.

References abort, cfun, cleanup(), i, and n.

Referenced by convert_from_eh_region_ranges().

void set_nothrow_function_flags ( void )

Definition at line 2948 of file except.c.

Referenced by rest_of_compilation().

static void sjlj_assign_call_site_values	(	rtx	dispatch_label,
		struct sjlj_lp_info *	lp_info
	)			`[static]`

Definition at line 1978 of file except.c.

References sjlj_lp_info::action_index, action_record_eq(), action_record_hash(), add_call_site(), call_site_base, sjlj_lp_info::call_site_index, cfun, collect_one_action_chain(), sjlj_lp_info::dispatch_index, free(), GEN_INT, htab_create(), htab_delete(), i, index(), r, and VARRAY_UCHAR_INIT.

Referenced by sjlj_build_landing_pads().

static void sjlj_build_landing_pads ( void ) [static]

Definition at line 2265 of file except.c.

References assign_stack_local(), cfun, free(), gen_label_rtx(), int_size_in_bytes(), sjlj_assign_call_site_values(), sjlj_emit_dispatch_table(), sjlj_emit_function_enter(), sjlj_emit_function_exit(), sjlj_find_directly_reachable_regions(), sjlj_mark_call_sites(), TYPE_ALIGN, TYPE_MODE, and xcalloc().

Referenced by finish_eh_generation().

static void sjlj_emit_dispatch_table	(	rtx	dispatch_label,
		struct sjlj_lp_info *	lp_info
	)			`[static]`

Definition at line 2200 of file except.c.

References adjust_address, cfun, convert_memory_address(), convert_to_mode(), copy_to_reg(), emit_cmp_and_jump_insns(), emit_insn_before(), emit_label(), emit_move_insn(), end_sequence(), EQ, expand_builtin_setjmp_receiver(), GEN_INT, get_insns(), i, integer_type_node, mem, NULL_RTX, Pmode, start_sequence(), TYPE_MODE, UNITS_PER_WORD, and word_mode.

Referenced by sjlj_build_landing_pads().

static void sjlj_emit_function_enter ( rtx dispatch_label ) [static]

static void sjlj_emit_function_exit ( void ) [static]

Definition at line 2180 of file except.c.

References cfun, emit_insn_after(), emit_library_call(), end_sequence(), get_insns(), LCT_NORMAL, Pmode, start_sequence(), unwind_sjlj_unregister_libfunc, and XEXP.

Referenced by sjlj_build_landing_pads().

void sjlj_emit_function_exit_after ( rtx after )

Definition at line 2173 of file except.c.

static bool sjlj_find_directly_reachable_regions ( struct sjlj_lp_info * lp_info ) [static]

Definition at line 1929 of file except.c.

References cfun, find_reg_note(), get_insns(), insn, INSN_P, INTVAL, NEXT_INSN, NULL_RTX, NULL_TREE, rc, reachable_next_level(), REG_EH_REGION, region, RNL_CAUGHT, RNL_MAYBE_CAUGHT, RNL_NOT_CAUGHT, and XEXP.

Referenced by sjlj_build_landing_pads().

static void sjlj_mark_call_sites ( struct sjlj_lp_info * lp_info ) [static]

Definition at line 2042 of file except.c.

References adjust_address, before, cfun, emit_insn_before(), emit_move_insn(), end_sequence(), find_first_parameter_load(), find_reg_note(), flag_non_call_exceptions, GEN_INT, GET_CODE, get_insns(), insn, INSN_P, integer_type_node, INTVAL, may_trap_p(), mem, NEXT_INSN, NULL_RTX, p, PATTERN, REG_EH_REGION, region, start_sequence(), TYPE_MODE, and XEXP.

Referenced by sjlj_build_landing_pads().

static void sjlj_output_call_site_table ( void ) [static]

Definition at line 3620 of file except.c.

References call_site_base, cfun, cs, dw2_asm_output_data_uleb128(), i, INTVAL, and n.

Referenced by output_function_exception_table().

static int sjlj_size_of_call_site_table ( void ) [static]

Definition at line 3550 of file except.c.

References cfun, cs, i, INTVAL, n, size, and size_of_uleb128().

Referenced by output_function_exception_table().

static int t2r_eq	(	PTR	pentry,
		const PTR	pdata
	)			const `[static]`

Definition at line 1442 of file except.c.

References TREE_PURPOSE.

Referenced by init_eh().

static hashval_t t2r_hash ( PTR pentry ) const [static]

Definition at line 1453 of file except.c.

References TREE_PURPOSE, and TYPE_HASH.

Referenced by init_eh().

static int ttypes_filter_eq	(	PTR	pentry,
		const PTR	pdata
	)			const `[static]`

Definition at line 1501 of file except.c.

Referenced by assign_filter_values().

static hashval_t ttypes_filter_hash ( PTR pentry ) const [static]

Definition at line 1512 of file except.c.

References TYPE_HASH.

Referenced by assign_filter_values().

Variable Documentation

int call_site_base [static]

Definition at line 105 of file except.c.

Referenced by add_call_site(), dw2_output_call_site_table(), sjlj_assign_call_site_values(), and sjlj_output_call_site_table().

int flag_non_call_exceptions

Definition at line 87 of file except.c.

Referenced by arm_expand_prologue(), can_throw_external(), control_flow_insn_p(), convert_from_eh_region_ranges_1(), convert_to_eh_region_ranges(), count_reg_usage(), darwin_override_options(), distribute_notes(), eliminate_partially_redundant_loads(), emit_input_reload_insns(), emit_libcall_block(), emit_output_reload_insns(), expand_eh_region_end_cleanup(), expand_expr_real(), find_invariant_insn(), find_moveable_store(), finish_function(), fixup_abnormal_edges(), insn_dead_p(), insn_live_p(), java_init_options(), make_edges(), mark_stmt_if_obviously_necessary(), maybe_encapsulate_block(), override_options(), prepare_cmp_insn(), prescan_loop(), process_options(), regmove_optimize(), reload_as_needed(), rest_of_handle_postreload(), s390_emit_prologue(), simple_mem(), sjlj_mark_call_sites(), thumb_expand_prologue(), tree_could_throw_p(), and try_split().


Data Types
type	sjlj_lp_info
type	action_record
Defines
#define	EH_RETURN_DATA_REGNO(N) INVALID_REGNUM
Enumerations
enum	reachable_code { RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED, RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED, RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED, RNL_NOT_CAUGHT, RNL_MAYBE_CAUGHT, RNL_CAUGHT, RNL_BLOCKED }
Functions/Subroutines
tree lang_protect_cleanup_actions	PARAMS ((void))
int lang_eh_type_covers	PARAMS ((tree a, tree b))
tree lang_eh_runtime_type	PARAMS ((tree))
struct ehl_map_entry	GTY (())
static	GTY ((param_is(union tree_node)))
static int t2r_eq	PARAMS ((const PTR, const PTR))
static hashval_t t2r_hash	PARAMS ((const PTR))
static rtx get_exception_filter	PARAMS ((struct function *))
static void remove_unreachable_regions	PARAMS ((rtx))
static void convert_from_eh_region_ranges_1	PARAMS ((rtx , int , int))
static struct eh_region *duplicate_eh_region_1	PARAMS ((struct eh_region , struct inline_remap ))
static void duplicate_eh_region_2	PARAMS ((struct eh_region , struct eh_region *))
static int add_ttypes_entry	PARAMS ((htab_t, tree))
static int add_ehspec_entry	PARAMS ((htab_t, htab_t, tree))
static bool sjlj_find_directly_reachable_regions	PARAMS ((struct sjlj_lp_info *))
static void sjlj_assign_call_site_values	PARAMS ((rtx, struct sjlj_lp_info *))
static void add_ehl_entry	PARAMS ((rtx, struct eh_region *))
static void remove_eh_handler	PARAMS ((struct eh_region *))
static int for_each_eh_label_1	PARAMS ((PTR *, PTR))
static int check_handled	PARAMS ((tree, tree))
static void add_reachable_handler	PARAMS ((struct reachable_info , struct eh_region , struct eh_region *))
static enum reachable_code reachable_next_level	PARAMS ((struct eh_region , tree, struct reachable_info ))
static int add_action_record	PARAMS ((htab_t, int, int))
static int collect_one_action_chain	PARAMS ((htab_t, struct eh_region *))
static int add_call_site	PARAMS ((rtx, int))
static void push_uleb128	PARAMS ((varray_type *, unsigned int))
static void push_sleb128	PARAMS ((varray_type *, int))
int	doing_eh (int do_warn)
void	init_eh ()
void	init_eh_for_function ()
void	expand_eh_region_start ()
static struct eh_region *	expand_eh_region_end ()
void	expand_eh_region_end_cleanup (tree handler)
void	expand_start_all_catch ()
void	expand_start_catch (tree type_or_list)
void	expand_end_catch ()
void	expand_end_all_catch ()
void	expand_eh_region_end_allowed (tree allowed, tree failure)
rtx	expand_builtin_extend_pointer (tree addr_tree)
void	expand_eh_region_end_must_not_throw (tree failure)
void	expand_eh_region_end_throw (tree type)
void	expand_eh_region_end_fixup (tree handler)
void	note_eh_region_may_contain_throw ()
rtx	get_exception_pointer (struct function *fun)
static rtx	get_exception_filter (struct function *fun)
static void	collect_eh_region_array ()
static void	resolve_fixup_regions ()
static void	remove_fixup_regions ()
static void	remove_unreachable_regions (rtx insns)
static void	convert_from_eh_region_ranges_1 (rtx pinsns, int orig_sp, int cur)
void	convert_from_eh_region_ranges ()
static void	add_ehl_entry (rtx label, struct eh_region *region)
void	find_exception_handler_labels ()
bool	current_function_has_exception_handlers ()
static struct eh_region *	duplicate_eh_region_1 (struct eh_region o, struct inline_remap map)
static void	duplicate_eh_region_2 (struct eh_region o, struct eh_region *n_array)
int	duplicate_eh_regions (struct function ifun, struct inline_remap map)
static int	t2r_eq (PTR pentry, const PTR pdata) const
static hashval_t	t2r_hash (PTR pentry) const
static void	add_type_for_runtime (tree type)
static tree	lookup_type_for_runtime (tree type)
static int	ttypes_filter_eq (PTR pentry, const PTR pdata) const
static hashval_t	ttypes_filter_hash (PTR pentry) const
static int	ehspec_filter_eq (PTR pentry, const PTR pdata) const
static hashval_t	ehspec_filter_hash (PTR pentry) const
static int	add_ttypes_entry (htab_t ttypes_hash, tree type)
static int	add_ehspec_entry (htab_t ehspec_hash, htab_t ttypes_hash, tree list)
static void	assign_filter_values ()
static void	build_post_landing_pads ()
static void	connect_post_landing_pads ()
static void	dw2_build_landing_pads ()
static bool	sjlj_find_directly_reachable_regions (struct sjlj_lp_info *lp_info)
static void	sjlj_assign_call_site_values (rtx dispatch_label, struct sjlj_lp_info *lp_info)
static void	sjlj_mark_call_sites (struct sjlj_lp_info *lp_info)
static void	sjlj_emit_function_enter (rtx dispatch_label)
void	sjlj_emit_function_exit_after (rtx after)
static void	sjlj_emit_function_exit ()
static void	sjlj_emit_dispatch_table (rtx dispatch_label, struct sjlj_lp_info *lp_info)
static void	sjlj_build_landing_pads ()
void	finish_eh_generation ()
static hashval_t	ehl_hash (PTR pentry) const
static int	ehl_eq (PTR pentry, const PTR pdata) const
static void	remove_exception_handler_label (rtx label)
static void	remove_eh_handler (struct eh_region *region)
void	maybe_remove_eh_handler (rtx label)
void	for_each_eh_label (callback)
static int	for_each_eh_label_1 (PTR *pentry, PTR data)
static int	check_handled (tree handled, tree type)
static void	add_reachable_handler (struct reachable_info info, struct eh_region lp_region, struct eh_region *region)
static enum reachable_code	reachable_next_level (struct eh_region region, tree type_thrown, struct reachable_info info)
rtx	reachable_handlers (rtx insn)
bool	can_throw_internal (rtx insn)
bool	can_throw_external (rtx insn)
void	set_nothrow_function_flags ()
void	expand_builtin_unwind_init ()
rtx	expand_builtin_eh_return_data_regno (tree arglist)
rtx	expand_builtin_extract_return_addr (tree addr_tree)
rtx	expand_builtin_frob_return_addr (tree addr_tree)
void	expand_builtin_eh_return (stackadj_tree, tree handler_tree)
void	expand_eh_return ()
static int	action_record_eq (PTR pentry, const PTR pdata) const
static hashval_t	action_record_hash (PTR pentry) const
static int	add_action_record (htab_t ar_hash, int filter, int next)
static int	collect_one_action_chain (htab_t ar_hash, struct eh_region *region)
static int	add_call_site (rtx landing_pad, int action)
void	convert_to_eh_region_ranges ()
static void	push_uleb128 (varray_type *data_area, unsigned int value)
static void	push_sleb128 (varray_type *data_area, int value)
static int	dw2_size_of_call_site_table ()
static int	sjlj_size_of_call_site_table ()
static void	dw2_output_call_site_table ()
static void	sjlj_output_call_site_table ()
void	default_exception_section ()
void	output_function_exception_table ()
Variables
int	flag_non_call_exceptions
static int	call_site_base